April 20 (UPI) -- A mother and her six children, ranging from 3- to 11-years-old, died in a fire in Clinton County, Pa., when their home exploded. On Sunday at about 8:42 a.m. EST., emergency response units from nearby Centre and Lycoming counties were alerted to a fire on Long Run Road in Lamar Township. The home of 34-year-old Sarah B. Stolzfus and her children was fully engulfed in flames when first responders arrived on the scene. State police said the cause of the explosion is under